WO2019221403A1 - Procédé d'injection automatique de monomère acrylique pour matériau optique dans un moule - Google Patents

Procédé d'injection automatique de monomère acrylique pour matériau optique dans un moule Download PDF

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Publication number
WO2019221403A1
WO2019221403A1 PCT/KR2019/004675 KR2019004675W WO2019221403A1 WO 2019221403 A1 WO2019221403 A1 WO 2019221403A1 KR 2019004675 W KR2019004675 W KR 2019004675W WO 2019221403 A1 WO2019221403 A1 WO 2019221403A1
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Prior art keywords
mold
injection
monomer
injecting
optical material
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PCT/KR2019/004675
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English (en)
Korean (ko)
Inventor
장동규
김준섭
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주식회사 케이오씨솔루션
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Priority claimed from KR1020180137341A external-priority patent/KR20190130450A/ko
Application filed by 주식회사 케이오씨솔루션 filed Critical 주식회사 케이오씨솔루션
Publication of WO2019221403A1 publication Critical patent/WO2019221403A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C08F220/32—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/44—Resins; Plastics; Rubber; Leather

Definitions

  • the present invention relates to a method of manufacturing an optical material by injecting an acrylic monomer solution into a cavity formed between a pair of molds with an outer seal, and more particularly, using a vision recognition system while injecting an acrylic monomer solution into the cavity.
  • the present invention relates to a method of automatically injecting a mold for an acrylic optical material monomer to enable a quantitative injection within a short time.
  • plastic lenses are lighter than glass lenses, do not break easily, and have good workability. Therefore, plastic lenses are used more recently than glass lenses.
  • Such a plastic lens is manufactured by injecting a polymer compound called a monomer into a mold and hardening it, followed by appropriate post-processing. That is, the monomer solution is manufactured by injecting a monomer solution into a mold having a lens-shaped empty injection space (cavity).
  • Patent Document 1 discloses a 'moving distance setting device of a mold for manufacturing an eyeglass lens'.
  • Patent Document 1 is a state in which the glass molds are spaced apart from each other using a mold chuck in order to accurately determine the separation distance of the glass mold for manufacturing the spectacle lens, the adhesive is taped to the outer peripheral surface of the glass mold and the monomer on the glass mold is completed The method of injecting the solution manually is introduced.
  • liquid monomer generates a volatile gas harmful to the human body, it may adversely affect the health of the operator when working for a long time.
  • the acrylate-based optical material can be made into a structure having a high transmittance of the spectacle lens and less chemical influence on other compounds in the molecule, and thus is widely used for lenses or photochromic lenses requiring high transparency.
  • the composition for epoxy acrylic optical materials disclosed in Korean Patent Nos. 10-0496911, 10-0498896, etc. has a high refractive index and high Abbe's number, excellent optical properties such as transparency, light weight, and heat resistance, and low cost of materials. Has the advantage. Reducing production costs is one of the major concerns in the field of optical lenses, including acrylate-based optical materials. If automatic injection is possible in an automatic production facility without going through a human hand, not only productivity improvement but also human hazards in the production process can be solved. However, despite many attempts, automation of injection is still difficult. This is also caused by the high viscosity of the monomer, the difference in viscosity and pot life according to the composition.
  • Patent Document 2 Korean Patent No. 10-1383132 discloses a monomer auto-injection equipment for eyeglass lenses and a method for producing eyeglass lenses using the same.
  • the position of a lens mold is grasped
  • the displacement sensor laser sensor
  • the monomer composition is more viscous than water, so that the change in the water level is not a horizontal change but a two-dimensional symmetrical parabola.
  • it was difficult to accurately detect the water level in real time which made it difficult to inject the correct amount despite the stepwise adjustment of the injection amount, resulting in insufficient injection amount or excessive injection amount, leading to product defects or overflowing monomers.
  • the composition could contaminate the injection equipment.
  • ⁇ Plastic product manufacturing method and manufacturing apparatus '' of Patent Document 3 is a method for automating the process of injecting a plastic stock solution into a molding mold during a plastic lens manufacturing process.
  • the first flow rate and the first time are set by measuring the width between the first and second wall portions, and the first step of injecting the plastic stock solution for the first time at the first flow rate into the cavity; and the first step following the first step.
  • It has a second process of injecting the plastic stock solution at a second flow rate less than the flow rate so as to inject the stock solution at a large flow rate only for a predetermined time, and then, after the injection of the stock solution at a small flow rate toward the end of the injection, At the same time, the amount of leakage can be reduced.
  • Patent Document 4 is a suitable method for injecting the raw material so that bubbles do not remain, but it was still difficult to inject the raw material in the correct amount.
  • Patent Document 1 Republic of Korea Utility Model Registration No. 20-0236704
  • Patent Document 2 2. Republic of Korea Patent No. 10-1383132
  • Patent Document 3 Japanese Patent No. 3707189
  • Patent Document 4 Japanese Patent Application Publication No. 2007-80766
  • Patent Document 5 Republic of Korea Patent No. 10-0496911
  • Patent Document 6 Republic of Korea Patent No. 10-0498896
  • each monomer has a difference in curing rate, curing time, difference in viscosity, difference in oil level, and composition in the same series of monomers. There is a problem that it is difficult to precise injection because it can not cope with the difference.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a method of automatically injecting a mold for an acrylic optical material monomer capable of accurately injecting a monomer composition for an acrylic optical material into a mold without a lack of injection amount or excessive injection amount. To provide.
  • the present invention while injecting the monomer composition for acrylic optical material divided into the cavity of the mold in two stages, most of them are injected in the first stage, and then in the second stage to detect the oil level of the acrylic monomer solution using a vision recognition system It is an object of the present invention to provide a method of automatically injecting a monomer for an acrylic optical material that can shorten the injection time by stopping the injection when the final injection point is detected and can quantify the monomer solution so that it does not overflow or run short. .
  • step (c) following the step (b) following the step of injecting the monomer composition into the cavity while detecting the oil surface using a vision recognition system to terminate the injection of the monomer composition when the oil surface is detected at the final injection point set;
  • a vision recognition system to terminate the injection of the monomer composition when the oil surface is detected at the final injection point set;
  • the monomer composition may be injected into the cavity by a predetermined weight or volume, or may be injected to a predetermined area in the mold using a vision recognition system.
  • the vision recognition system photographs the contour of the mold and the oil level of the monomer solution injected into the mold, wherein the first region is located at a part of the mold contour to detect a state in which the mold is set at the injection position, and outside the mold.
  • the second area located may be set.
  • the controller injects most of the monomer solution into the mold at the first injection pressure, when the controller detects the contour of the mold in the first region. If the oil level is detected in the second region while injecting the residual amount of the monomer solution at a pressure lower than the first injection pressure, the injection of the monomer solution is terminated.
  • the contour of the mold and the oil level of the monomer solution are detected by the change in the number of pixels.
  • the virtual contour is displayed in the form of an arc in the first region, the photographing position is adjusted so that the contour of the mold photographed when the mold contour in the first region is matched with the virtual contour. As the position of the first region changes, the position of the second region is moved together to detect a change in oil level.
  • the first region means a position having both diagonal direction information, that is, the X direction information and the Y direction information of the mold, and the position change of the mold when the mold is placed as an injection position.
  • the first region serves as a reference for the positional movement of the second region. In the first region, the contour of the mold is immediately detected when the mold is seated at the injection position.
  • the second region is set outside of a position close to the monomer inlet of the mold to fill the monomer solution without bubbles in the cavity inside the mold, and is generally installed at a position within 1 to 2 mm from the mold contour. .
  • the controller is to inject 70 ⁇ 99% of the monomer solution at a high pressure, that is, at a high speed when the first injection of the monomer solution injected into the syringe into the mold, and to slowly inject the remaining amount at a low pressure Control the syringe drive.
  • the monomer composition for an acrylic optical material preferably includes any one or more of an epoxy acrylate compound represented by Formula 1 below and an epoxy acrylate compound represented by Formula 2 below.
  • Injection of the monomer composition is preferably made in a temperature range of 5 ⁇ 60 °C.
  • the injection when the injection of the monomer for acrylic optical material into the mold, the injection is automatically stopped when the final injection point is reached while checking the oil level using a vision recognition system, so that the amount of the monomer solution is not short and not overflowed. Do.
  • the injection time of the monomers can be shortened by providing a step of injecting most of the monomers into the cavity inside the mold firstly quickly, it is easy to set the injection to be completed within a predetermined pot life, and thus curing according to the monomers. Irrespective of the difference in speed and curing time, dosing can be carried out at optimum conditions before curing.
  • the present invention it is possible to produce high quality acrylic lenses by automatic injection without defects due to lack of injection amount or excess, so that the productivity can be greatly improved and the production cost can be reduced by reducing the labor cost, and the operator can directly Abnormal operation or failure of the equipment due to exposure problems and excessive injection of the monomer composition can also be prevented.
  • FIG. 1 is a flowchart schematically illustrating a lens manufacturing process according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a monomer automatic injection method according to an embodiment of the present invention
  • FIG. 5 illustrates a state in which the monomer solution is filled in the mold in FIG. 4.
  • step (c) injecting the monomer composition into the cavity and detecting the oil level using a vision recognition system to terminate the injection of the monomer composition when oil is detected at the final injection point.
  • the monomer composition for acrylic optical materials is meant to include all of compositions having a acrylate monomer as a main component.
  • the 'monomer solution' refers to when the monomer composition is in a liquid state with fluidity.
  • the monomer composition for acrylic optical materials has a viscosity of 20 to 1,000 cps at a solid phase refractive index of 1.50 to 1.63 and 25 ° C. More preferably, the viscosity is 30-500 cps at 25 degreeC.
  • the monomer composition for an acrylic optical material preferably includes any one or more of an epoxy acrylate compound represented by Formula 1 below and an epoxy acrylate compound represented by Formula 2 below.
  • the monomer composition for acrylic optical materials may include styrene, divinylbenzene, alphamethylstyrene, alphamethylstyrene dimer, methyl methacrylate, benzyl methacrylate, chlorostyrene, bromostyrene, methoxy styrene, monobenzyl maleate, Dibenzyl maleate, monobenzyl fumarate, dibenzyl fumarate, methylbenzyl maleate, dimethyl maleate, diethyl maleate, dibutyl maleate, dibutyl fumarate, monobutyl maleate, monopentyl maleate, diphene It may further comprise one or two or more compounds selected from the group consisting of tilmaleate, monopentyl fumarate, dipentyl fumarate and diethylene glycol bisaryl carbonate.
  • the monomer composition for acrylic optical material may further include an internal mold release agent.
  • an internal mold release agent By adding an internal mold release agent in a monomer composition before casting polymerization, mold release property after superposition
  • the internal mold release agent may preferably be included in the composition in an amount of 0.001 to 10% by weight.
  • a phosphate ester compound As an internal mold release agent, a phosphate ester compound, a silicone type surfactant, a fluorine type surfactant, an alkyl quaternary ammonium salt, etc. can be used individually or in combination of 2 or more types, respectively.
  • Fluorine-based nonionic surfactants are compounds having a perfluoroalkyl group in the molecule, such as Eudin DS-401 TM (Japan, Daishin Industrial Co., Ltd.), Unidin DS-403 TM (Japan, Daikin Industrial Co., Ltd.), Eftop EF. 122A TM (Japan, Shin-Avada Chemical Co., Ltd.), Effope EF 126 TM (Japan, Shin-Avada Chemical Co., Ltd.), and Eftop EF 301 TM (Japan, Shin-Avada Chemical Co., Ltd.).
  • Silicone-based nonionic surfactants are compounds having a dimethylpolysiloxane group in a molecule, such as Q2-120A TM of Dow, USA.
  • Alkyl quaternary ammonium salts are commonly known as cationic surfactants, and there are halogem salts, phosphates, sulfates and the like, and examples of the chloride type thereof include trimethylcetyl ammonium chloride, trimethyl stearyl ammonium chloride, dimethylethylcetyl ammonium chloride, Triethyldecylammonium chloride, trioctylmethyl ammonium chloride, diethylcyclohexide, decylammonium chloride and the like.
  • a phosphate ester compound can be used as an internal mold release agent.
  • the phosphate ester compound is a compound having a phosphate ester group, and is, for example, isopropyl acid phosphate, diisopropyl acid phosphate, butylic acid phosphate, dibutyl phosphate, octylic acid phosphate, dioctyl acid phosphate, isodecyl acid phosphate, or diisode.
  • polyoxyethylene nonylphenol ether phosphate 5% by weight of 5 mole of ethylene oxide added, 80% by weight of 4 mole added, 10% by weight of 3 mole added, 1 mole added
  • polyoxyethylene nonylphenyl phosphate 5% by weight of 9 mol of ethylene oxide added, 80% by weight of 8 mol of ethylene oxide, 10% by weight of 7 mol of ethylene oxide, ethylene 5% by weight of oxide added up to 6 mol
  • polyoxyethylenenonylphenol ether phosphate 3% by weight of 11 moles of ethylene oxide added, 80% by weight of 10 moles added, 5% by weight of 9 moles added, 7 mole added 6% by weight, 6 mole added 6% by weight
  • polyoxyethylene nonylphenol ether phosphate 13 mole added by ethylene oxide 3% by weight, 12 mole added by 80% by weight, 11 mole added 8% by weight, 9% by weight added 3% by weight, 4% by
  • the monomer composition of the present invention may further include a heat stabilizer.
  • the heat stabilizer may be included in the composition of the present invention preferably 0.01 to 5.00% by weight. When the thermal stabilizer is used at less than 0.01% by weight, the thermal stability effect is weak. When the thermal stabilizer is used at more than 5.00%, the polymerization failure rate during curing may be high and the thermal stability of the cured product may be lowered.
  • heat stabilizer examples include calcium stearate, barium stearate, zinc stearate, cadmium stearate, lead stearate, magnesium stearate, aluminum stearate, potassium stearate and zinc octoate, which are metal fatty acid salts.
  • One or two or more compounds selected from the compounds can be used.
  • triphenyl phosphite diphenyldecyl phosphite, phenyl diddecyl phosphite, diphenyl dodecyl phosphite, diphenyl isodecyl phosphate, trinolyl phenyl phosphite, diphenyl isooctyl phosphite, and triphosphate
  • One or two or more compounds selected from butyl phosphite, tripropyl phosphite, triethyl phosphite, trimethyl phosphite, tris (monodecyl phosphite) and tris (monophenyl) phosphite can be used.
  • diphenylisodecyl phosphate can be used.
  • dibutyltin diaurate dibutyltin maleate, dibutyltin bis (isooctyl maleate), dioctyl maleate, dibutyltin bis (monomethyl maleate), and dibutyltin bis Uryl mercaptide
  • dibutyl bis isooxyl mercaptoacetate
  • monobutyl tin tris isooctyl mercaptoacetate
  • dimethyl tin bis isooctyl mercaptoacetate
  • tris isooctyl mercaptoacetate
  • fertility Tiltin bis isooctyl mercaptoacetate
  • dibutyl tin bis (2-mercapto ethyl laurate monobutyl tin tris (2- mercapto ethyl laurate)
  • dimethyl tin bis (2- mercapto ethylate And 1 type, or 2 or more types selected from compounds
  • the thermal stability of the optical lens can be greatly improved without deteriorating not only the initial color of the molded lens but also optical properties such as transparency, impact strength, heat resistance and polymerization yield.
  • the monomer composition of the present invention further includes a polymerization catalyst, an ultraviolet absorber, an organic dye, an inorganic pigment, an anti-coloring agent, an antioxidant, a light stabilizer, etc. according to a conventional technique in the field of plastic optical lenses, as needed. can do.
  • the injection into the mold of the monomer composition is preferably made in a temperature range of 5 to 60 ° C, more preferably in a temperature range of 5 to 40 ° C. It is possible to maintain the pot life properly by injecting at an appropriate temperature, and to improve the quality of the optical material by lowering the incidence of striae, rings, and variable uncured resins in the finally obtained optical material.
  • the monomer composition may be injected into the cavity by a predetermined weight or volume, or may be injected to a predetermined area in the mold using a vision recognition system.
  • the step (c) is to detect the oil surface using a vision recognition system to terminate the injection of the monomer composition when the oil surface is detected at the final injection point set.
  • a method of automatically injecting a monomer solution into a mold to manufacture an optical material such as a lens includes loading a mold (S10), taping (S20), opening a tape (S30), and injecting a monomer ( S40), the tape closing (S50) and the mold unloading (S60) step, and the subsequent process of curing the monomer after the separation from the mold to complete the lens, these processes are basically the same as the existing method Do.
  • the monomer of the raw material tank is injected into the cavity of the mold, and a specific method of stopping the injection of the monomer solution is provided by detecting the oil level using a vision recognition system and detecting the oil level at the final injection point.
  • the monomer solution (S) of the monomer solution tank (10) is first suctioned into the syringe (20) capable of volume control according to the cavity of the mold (M), and then the syringe (20) Inject the monomer solution (S) injected into the mold (M) in the second most of the amount at a high speed, and lower the injection pressure to inject the remaining amount, finally using the non-recognition system to the monomer solution (S)
  • the injection is finished after confirming that the mold M is filled inside.
  • the vision recognition system photographs the contour of the mold M and the oil level L1 of the monomer solution S injected into the cavity of the mold M, as shown in FIGS. 2 to 5.
  • the first region A1 of a part of the contour of the mold M and the second region A2 located outside the injection hole of the mold M are set to detect a state in which the mold M is set at the injection position. It is.
  • the controller (C) is the image signal photographed by the vision recognition system, that is, as shown in Figure 2 when the contour of the mold (M) is detected in the first area (A1), the mold (M) in the injection position
  • the contour of the mold M and the virtual contour L displayed in the arc shape in the first area A1 are determined to match.
  • Fine adjustment that is, by adjusting the position of the vision camera is subjected to a photographing position adjusting step of matching the virtual contour (L) with the contour of the mold (M).
  • the position of the first region A1 is adjusted and at the same time the position of the second region is equidistantly moved together with the first region A1, so that the position of the mold M is placed in the injection apparatus.
  • the second area (A2) to be photographed in the vision recognition system is slightly changed by the second area (A2) to be photographed in the vision recognition system to capture the same position to detect the change in the surface of the monomer solution.
  • the controller (C) analyzes the image taken by the vision recognition system to detect the capacity of the cavity and whether the injection position is set according to the type of the mold (M), and the drive unit 22 and the valve of the syringe 20 ( By controlling the opening and closing operation of V), as shown in FIG. 3, the amount of first suction of the monomer solution S into the syringe 20 and the time of injection of the monomer solution M into the mold M, the injection pressure, and the end point of injection are shown. Control and fine adjustment of the vision recognition system.
  • controller (C) sets the injection pressure differently according to the type of the mold (M) and the monomer solution (S) by an external input means such as a touch pad or a keyboard, and a new type of mold or monomer solution. In use, it is possible to find and set the optimum injection pressure by storing the data obtained through repeated tests.
  • the driving unit 22 inhales the monomer solution into the interior of the syringe 20 by the plunger 23 is moved forward and backward by the power of a motor (not shown), or the sucked monomer solution into the mold (M).
  • a motor not shown
  • the present invention is not limited thereto, and the driving method of the driving unit 22 may use various known methods.
  • the monomer solution S is sucked into the syringe 20 so as to match the cavity capacity of the mold M according to the type of the mold M supplied, wherein the raw material tank ( The valve (V) installed between the 10) and the syringe 20 maintains an open state, and the nozzle 21 portion of the nozzle 21 has a syringe in a state in which air from the outside is blocked by a built-in check valve (not shown). (20) The upper driving unit 22 is operated to fill the monomer 20 with the quantitative amount of the monomer solution S.
  • valve (V) may be controlled to open and close operation by the controller (C), is opened when the drive unit 22 of the syringe 20 to perform the suction operation using a check valve, that is, discharge operation
  • a check valve that is, discharge operation
  • the injection into the mold can also be automatically closed.
  • the position of the camera is finely adjusted to match the virtual contour L. It is understood that the mold M is seated at the injection position, and the driving unit 22 is driven in the opposite direction to the primary, so that the monomer solution S inside the syringe 20 is nozzled.
  • the driving is to inject only a predetermined amount of the monomer solution (S), the predetermined amount is set to be 70 to 99% of the amount first injected into the syringe 20, more preferably 90 to 98% It is.
  • the injection pressure of the monomer solution S may be injected at the highest pressure within the range where bubbles are not generated in the monomer solution according to the viscosity of the monomer solution or the cavity thickness inside the mold, so that the injection time can be shortened. do.
  • the monomer solution S is applied at a first injection pressure set in advance according to the type of the supplied mold. Most of the injection into the mold (M), and then the remaining amount is injected at a pressure relatively lower than the first injection pressure and whether the oil surface (L1) appears in the second area (A2) located outside the mold (M) When the oil surface (L1) appears to confirm whether the injection of the monomer solution is terminated, if the oil surface does not appear, the monomer solution is injected at a minute pressure until the oil surface appears in the second region (A2).
  • the contour of the mold or the oil level of the monomer solution is detected by the change in the number of pixels.
  • the contour of the mold and the oil level of the monomer solution are determined by the difference in density between air, the mold, and the monomer solution.
  • the boundary portion is seen as a linear shade, whereby the outline of the mold and the oil surface of the monomer solution are formed by the number of pixels formed by the linear shade photographed in each region.
  • the contour of the mold M detected in the areas A1 and A2 and the surface thickness of the monomer solution are generally constant, so that the number of pixels detected is almost constant, but the peripheral parts are all operating rapidly, And other movements of the device, which may be reflected by a strange phenomenon in the mold or the monomer solution, and thus may be misdetected. To prevent this.
  • the amount of the monomer solution injected at the first injection pressure is appropriately 70 to 99% of the total injection amount, but the present invention is not limited thereto, and the primary injection amount is somewhat different depending on the type of mold and the viscosity of the monomer solution. Of course, it can be set.
  • the amount of the monomer solution injected at the first injection pressure is more preferably 90 to 98% of the total injection amount.
  • the most viscous monomer solution is rapidly injected into the cavity inside the mold at a high first pressure, and then the remaining pressure is gradually filled to reduce the injection pressure while using a vision recognition system at the final stage. As such, there is no risk of exceeding the injection volume.
  • most of the monomer solution is injected into the mold within a short time, and when the monomer solution in the second area is detected by the vision recognition system, the injection is terminated. Since the injection can produce a lens of uniform quality, and can shorten the injection time of the monomer can maximize the efficiency of the monomer injection operation. Accordingly, it is possible to prevent defects due to insufficient injection amount of the monomer solution and to prevent abnormal operation or failure of equipment caused by excessive injection of the monomer solution.
  • A1, A2 detection area

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Abstract

La présente invention concerne un procédé de préparation d'un matériau optique par l'injection d'une solution de monomère acrylique dans une cavité formée entre une paire de moules scellés de l'extérieur et, plus particulièrement, un procédé d'injection automatique d'un monomère acrylique pour un matériau optique dans un moule, le procédé permettant une injection quantitative en un temps court au moyen d'un système de reconnaissance visuelle tout en injectant la solution de monomère acrylique dans la cavité. La présente invention concerne un procédé d'injection automatique d'un monomère acrylique pour un matériau optique dans un moule comprenant les étapes consistant à : (a) préparer une composition de monomère acrylique pour un matériau optique, ayant un indice de réfraction en phase solide de 1,50 à 1,63 et une viscosité de 20 à 1 000 cps (25 °C) ; (b) injecter la majeure partie de la composition de monomère dans une cavité formée entre une paire de moules scellés de l'extérieur ; et (c) détecter la surface de l'huile au moyen d'un système de reconnaissance visuelle tout en injectant en continu dans la cavité la composition de monomère de l'étape (b), de façon à terminer l'injection de la composition de monomère lorsque la surface de l'huile est détectée à un point d'injection final défini. Selon la présente invention, la solution de monomère acrylique pour un matériau optique peut être injectée de manière automatique et quantitative en une proportion appropriée dans un moule.
PCT/KR2019/004675 2018-05-14 2019-04-18 Procédé d'injection automatique de monomère acrylique pour matériau optique dans un moule WO2019221403A1 (fr)

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KR10-2018-0055086 2018-05-14
KR20180055086 2018-05-14
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KR1020180137341A KR20190130450A (ko) 2018-05-14 2018-11-09 아크릴계 광학재료용 모노머의 몰드 자동 주입방법

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Citations (6)

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JPH02169208A (ja) * 1988-12-23 1990-06-29 Kureha Chem Ind Co Ltd プラスチックレンズ成形のためのプラスチック原料液注入装置
JPH09254169A (ja) * 1996-03-26 1997-09-30 Toray Ind Inc プラスチック原料液注入方法および装置
JPH11309768A (ja) * 1998-04-30 1999-11-09 Nec Corp 樹脂流動評価装置
JP2010052395A (ja) * 2008-08-29 2010-03-11 Hoya Corp プラスチックレンズ原料液注入方法および注入装置
KR20140023727A (ko) * 2012-08-17 2014-02-27 한국기초과학지원연구원 안경 렌즈용 모노머 자동 주입장비 및 이를 이용한 안경렌즈 생산방법
KR20150039454A (ko) * 2013-10-02 2015-04-10 주식회사 케이오씨솔루션 아크릴계 광분산용 플라스틱 렌즈 및 그 제조방법

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Publication number Priority date Publication date Assignee Title
JPH02169208A (ja) * 1988-12-23 1990-06-29 Kureha Chem Ind Co Ltd プラスチックレンズ成形のためのプラスチック原料液注入装置
JPH09254169A (ja) * 1996-03-26 1997-09-30 Toray Ind Inc プラスチック原料液注入方法および装置
JPH11309768A (ja) * 1998-04-30 1999-11-09 Nec Corp 樹脂流動評価装置
JP2010052395A (ja) * 2008-08-29 2010-03-11 Hoya Corp プラスチックレンズ原料液注入方法および注入装置
KR20140023727A (ko) * 2012-08-17 2014-02-27 한국기초과학지원연구원 안경 렌즈용 모노머 자동 주입장비 및 이를 이용한 안경렌즈 생산방법
KR20150039454A (ko) * 2013-10-02 2015-04-10 주식회사 케이오씨솔루션 아크릴계 광분산용 플라스틱 렌즈 및 그 제조방법

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